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The Structure and Evolution of Massive Rotating Single and Binary Population III Stars

文献类型：期刊论文

作者Song, Hanfeng1,2,3; Meynet, Georges2; Li, Zhi1,3; Peng, Weiguo1; Zhang, Ruiyu4; Zhan, Qiong1
刊名ASTROPHYSICAL JOURNAL
出版日期2020-03-20
卷号892期号:1页码:27
ISSN号0004-637X
关键词Close binary stars
DOI10.3847/1538-4357/ab7993
英文摘要The aim of this paper is to investigate the effect of rotation on the single and binary evolution for Population III stars. A small grid for a massive Population III star of 130 M is constructed, and various initial conditions are adjusted to explore the evolution. For comparison, we present the evolution of the models with the metallicity in the Small Magellanic Cloud and analyze the characteristic feature of chemically homogeneous evolution. It is found that Population III stars attain the equilibrium velocities later during synchronization owing to a smaller radius. The equilibrium velocity has been expressed as various timescales. There appears to be a deep dredge-up at hydrogen exhaustion for single Population III stars. It not only increases the helium core but also exchanges chemical elements between the He core and the H-burning shell. This will give rise to a significant amount of nitrogen and neon. Rotational mixing can reduce the specific entropy in the envelope and increase the specific entropy in the core owing to a change of mean molecular weight. Stellar compactness and the luminosity available for stellar expansion are decreased by rotational mixing because of the increase of helium in the envelopes. Mass loss induced by strong stellar winds and Roche lobe overflow can extinguish the hydrogen-burning shell and remove convective envelopes. Therefore, this process does not favor the dredge-up and production of primary nitrogen. The chemical structure for two components in binarities is significantly modified because Roche lobe overflow has an impact on convective cores.
WOS关键词PRESUPERNOVA EVOLUTION ; STELLAR EVOLUTION ; LOSS RATES ; LOW METALLICITY ; 1ST STARS ; SPIN-UP ; O-STARS ; MODELS ; PROGENITORS ; EXPLOSION
资助项目National Natural Science Foundation of China[11863003] ; National Natural Science Foundation of China[11463002] ; Swiss National Science Foundation[200020-172505] ; Science and Technology Planning Project in Guizhou Province[[2018]5781]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000522443500001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Swiss National Science Foundation ; Swiss National Science Foundation ; Science and Technology Planning Project in Guizhou Province ; Science and Technology Planning Project in Guizhou Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Swiss National Science Foundation ; Swiss National Science Foundation ; Science and Technology Planning Project in Guizhou Province ; Science and Technology Planning Project in Guizhou Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Swiss National Science Foundation ; Swiss National Science Foundation ; Science and Technology Planning Project in Guizhou Province ; Science and Technology Planning Project in Guizhou Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Swiss National Science Foundation ; Swiss National Science Foundation ; Science and Technology Planning Project in Guizhou Province ; Science and Technology Planning Project in Guizhou Province
源URL[http://ir.bao.ac.cn/handle/114a11/55737]  
专题中国科学院国家天文台
通讯作者Song, Hanfeng
作者单位1.Guizhou Univ, Coll Phys, Guiyang 550025, Guizhou, Peoples R China
2.Univ Geneva, Geneva Observ, CH-1290 Sauverny, Switzerland
3.Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Yunnan, Peoples R China
4.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
推荐引用方式
GB/T 7714		 Song, Hanfeng,Meynet, Georges,Li, Zhi,et al. The Structure and Evolution of Massive Rotating Single and Binary Population III Stars[J]. ASTROPHYSICAL JOURNAL,2020,892(1):27.
APA Song, Hanfeng,Meynet, Georges,Li, Zhi,Peng, Weiguo,Zhang, Ruiyu,&Zhan, Qiong.(2020).The Structure and Evolution of Massive Rotating Single and Binary Population III Stars.ASTROPHYSICAL JOURNAL,892(1),27.
MLA Song, Hanfeng,et al."The Structure and Evolution of Massive Rotating Single and Binary Population III Stars".ASTROPHYSICAL JOURNAL 892.1(2020):27.

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